<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Hello World</title>
    <script src="js/vue.js"></script>
    <script>
        window.onload=function(){
            var vm = new Vue({
                el:'#app',
                data:{
                    msg:'Hello World!'
                }
            })
        }
    </script>
</head>
<body>
    <div id="app">
        {{msg}}
    </div>
</body>
</html>